J/ ψ and D production in √sNN=68.5GeV PbNe collisions

LHCb Collaboration, R. Aaij, A.S.W. Abdelmotteleb, C. Abellan Beteta, F. Abudinén, T. Ackernley, B. Adeva, M. Adinolfi, Kristof de Bruyn, Maria Domenica Galati, Mick Mulder, Gerco Onderwater, Maarten van Veghel

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The first measurement of J/ ψ and D production in PbNe collisions by the LHCb experiment in its fixed-target configuration is reported. The production of J/ ψ and D mesons is studied with a beam of lead ions with an energy of 2.5 TeV per nucleon colliding on gaseous neon targets at rest, corresponding to a nucleon-nucleon centre-of-mass energy of sNN=68.5GeV . The J/ ψ / D production cross-section ratio is studied as a function of rapidity, transverse momentum and collision centrality. These data are compared with measurements from pNe collisions at the same energy and show no difference in the observed J/ ψ suppression trend when comparing pNe and PbNe peripheral collisions with PbNe central collisions. © 2023, The Author(s).

Original languageEnglish
Article number658
Number of pages11
JournalThe European Physical Journal C
Issue number7
Publication statusPublished - Jul-2023

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